OpenRouter model
StepFun: Step 3.5 Flash
Step 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token....
- Provider
- OpenRouter
- Availability
- Available
- Model ID
- stepfun/step-3.5-flash
- Snapshot
- 2026-08-28
StepFun: Step 3.5 Flash model overview
StepFun: Step 3.5 Flash is listed in the public Swarm catalog through OpenRouter. This page summarizes the verified catalog fields used by Swarm without claiming real-time access for every provider account.
- Provider
- OpenRouter
- Family
- OpenRouter
- Context window
- 262.1K tokens
- Thinking support
- Not supported
- Availability status
- Available
- Catalog ID
- openrouter/stepfun/step-3.5-flash
Public catalog snapshot. Catalog availability is not a real-time provider status or an access guarantee.